CN2802830Y

CN2802830Y - Miniature electric machine

Info

Publication number: CN2802830Y
Application number: CN 200520111168
Authority: CN
Inventors: 张弘
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-11
Filing date: 2005-07-11
Publication date: 2006-08-02
Anticipated expiration: 2015-07-11

Abstract

The utility model discloses a miniature electric machine which is mainly formed by assembling a magnetic cylinder 2, a bearing 3, a magnetic shoe assembly 4, a rotor 5, an inverter 6, an electric brush 7, a worm wheel 8, a power output shaft 9 and a speed reduction worm wheel housing 10 through a plurality of screw bolts 1, wherein the magnetic shoe assembly 4 of the utility model is composed of a magnetic shoe and a magnetic shoe holder. The utility model has characteristics that the utility model can keep the relative stability of the position of the magnetic shoe, is easy to assemble and is easy to disassemble after scrapped. The utility model is favorable for the simplification of assembly technique and environmental protection after scrapped. A respirator 14 of the utility model can ensure that water vapour in the electric machine can vaporize; external water is difficult to infiltrate. An oil deflector 11 can prevent lubricating fluid among speed reducers from splashing and flowing to the conducting surface of the inverter 6; the unfavourable effect on a conductive body is caused by that lubricant splashes and flows, and can be avoided.

Description

A kind of micromachine

Technical field the utility model relates to a kind of micromachine, particularly is applied to the micromachine in the various direct current energy conversion equipments.

Background technology is present, and as the energy conversion device of electric energy and mechanical energy, the application of motor and research have had considerable progress.Be conserve space, adapt to the load characteristic requirement, motor is developed into the various ways of pancake square shell, subsidiary deceleration device by the form of simple cylindrical housing, the output of single shaft power.In the controlled system with self-regulation that at present the restricted car door in space, seat etc. are located on automobile, what extensively adopt is exactly pancake motor with the worm and gear deceleration transmission.For example, in the automobile lifting window assembly, this kind motor is located within the car door, is used to provide the driving power that lifting glass for vehicle window is used.This motor has following characteristics: have the volume and the shape that are fit to narrow environment; Carry deceleration device, can reduce the back to rotating speed and obtain big moment.But in the design and production of existing this motor, existing technology is adopted in the assembling of each parts and location in the motor, and production equipment is many, and energy consumption is big, and motor can not decompose after discarding, and is unfavorable in environmental protection; Simultaneously sealed electric-motor internal cause variations in temperature and form steam causes faults such as short circuit easily; Lubricating fluid between decelerator spatters also can cause conduction problem such as bad when flowing to the steering gear conductive surface.

The summary of the invention the purpose of this utility model will provide a kind of motor exactly, under the prerequisite that guarantees motor performance, make the environmental protection treatment after motor is more convenient for assembling and discarding, will solve the interior steam release of motor simultaneously and prevent that the lubricating fluid between decelerator from spattering the problem that flows to the steering gear conductive surface.

In order to enhance productivity, be convenient to assemble magnetic shoe, the utility model is provided with supporter between two magnetic shoes, supporter has certain rigidity, a bight at itself and the chimeric place of magnetic shoe has sheet metal several times to bend, and is formed in axially and radially all to have certain flexible three-dimensional spring leaf shape, make magnetic shoe with respect to supporter axially and radially all be restricted, kept the stability of relative position.After magnetic shoe and supporter were combined into motor magnetic cylinder, the degree of freedom of all directions of magnetic shoe was restricted.And also chimeric mutually by between the locator protrusions on self poisoning hole and the motor magnetic cylinder of supporter realizes that the mutual alignment fixes.

For the moisture that motor internal is separated out outwards discharges, the utility model adopts the umbrella respiratory organ structure, and inside configuration is provided with the aperture of a plurality of mutual connections, and the aperture gas outlet is under the umbrella, is difficult for water inlet.And aperture design must help circulation of air, can form water surface tension again and prevent that water droplet from infiltrating, thereby realize the respirator function that motor internal steam is discharged.Respirator shape of the present utility model is small and exquisite, is convenient to assemble and disassemble, and helps enhancing productivity.

At the worm and gear of the reducing gear place that is meshing with each other, need to drip lubricant.And lubricant spatters the conductive surface that flows to commutator with the worm gear rotation easily along the worm screw axial direction, causes conduction bad, influences the motor normal working performance.In order to address this problem, the utility model has designed an oil baffle, and it is pressed and is embedded on the worm screw, between commutator and worm gear.It is bowl-shape that oil baffle is, and bowl-shape inwall is carved with spiral groove along the edge to the center.When rotor rotated, because the effect of synthetic centripetal force, the lubricant oil droplet that splashes the oil baffle inwall can be flow to the bottom centre of oil baffle by spiral grooves.And the lubricant oil droplet of bottom centre is because action of centrifugal force is got rid of back the worm gear direction along spiral groove.Thereby, avoided lubricant to spatter and flow on the commutator electric conductor surface.

The utility model is based on the micromachine of the built-in deceleration device of pancake shell, and its construction features generally are applicable to the motor product of other form.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a magnetic shoe assembly schematic diagram of the present utility model.

Fig. 3 is a respirator part schematic diagram of the present utility model.

Fig. 4 is an oil baffle part schematic diagram of the present utility model.

1. bolt, 2. magnetic cylinder, 21. magnetic cylinder locator protrusionss, 3. bearing, 4. magnetic shoe assembly, 40. magnetic shoe, 41. magnetic shoes, 42. magnetic shoe supporters, 43. magnetic shoe supporters, 44. location hole, 5. rotor, 6. inverter, 7. brush, 8. worm gear, 9. power output shaft, 10. deceleration worm gear shell, 11. oil baffles, 111. the bowl-shape inwall of oil baffle, 112. oil baffle oil collection grooves, 113. oil baffle bottom centre place, 12. worm screw axis, 13. power line, 14. respirators, 141. airways, 142. diffusing air flues.

The utility model will be further described below in conjunction with accompanying drawing for embodiment.As shown in Figures 1 to 4, the utility model is assembled by a plurality of bolts 1 by magnetic cylinder 2, bearing 3, magnetic shoe assembly 4, rotor 5, inverter 6, brush 7, worm gear 8, power output shaft 9 and deceleration worm gear shell 10.Described rotor 5 is supported by bearing 3, described bearing 3 is installed in the top bearing pedestal of magnetic cylinder 2, described magnetic shoe assembly 4 is installed in the magnetic inside wall of cylinder, magnetic shoe assembly 4 is made up of magnetic shoe 40, magnetic shoe 41, magnetic shoe supporter 42 and magnetic shoe supporter 43, the magnetic shoe supporter has certain rigidity, a bight at itself and the chimeric place of magnetic shoe, have and axially and radially all have certain flexible three-dimensional spring leaf, make magnetic shoe with respect to supporter axially and radially all be restricted, keep the relatively stable of magnetic shoe position.Inverter 6 is installed on the worm screw axis 12, and the winding wire on the rotor 5 links to each other with inverter 6, and the surface of inverter 6 contacts with brush 7, and brush 7 is connected with power line 13.Worm screw axis 12 is positioned at deceleration worm gear shell 10, and the worm gear 8 in its worm screw portion and the worm gear shell 10 is meshed, and power output shaft 9 is positioned at the centre bore of worm gear 8.Oil baffle 11 is pressed to be embedded on the worm screw axis 12, between inverter 6 and worm gear 8 worm engagings place.On deceleration worm gear shell 10, there is passage to make casing and outer gas phase logical, respirator 14 is positioned in the place, passway on the deceleration worm gear shell 10.As shown in Figure 3, described respirator 14 forms by having certain flexible material, there are airway 141 and diffusing air flue 142 mutual UNICOMs in inside, respirator 14 top areas are big, be umbrella, diffusing gas port is hidden under the umbrella, and diffusing air flue 142 is divided into the less passage group of several sectional areas, the assurance air-flow is unimpeded, and outside water is difficult for infiltrating.As shown in Figure 4, described oil baffle 11 is bowl-shape objects, and its bottom centre place 113 closely cooperates with worm screw axis 12, and oily stream can not ooze out from here.Oil collection grooves 112 is arranged on the oil baffle inwall 111, be three-dimensional helical form.

During machine operation, electric current is input on the coil that twines on the rotor 5 through brush 7 and inverter 6 by power cable 13, rotor 5 rotates in the magnetic field of magnetic shoe 40 and magnetic shoe 41 formation, rotational energy is delivered to output shaft 9 by deceleration worm gear 8, rotating speed and moment with regulation are externally exported, and the moisture of motor internal is drained in the air by respirator 14.When rotor 5 rotated, because the effect of synthetic centripetal force, the lubricant oil droplet that splashes on the oil baffle inwall 111 can be by the bottom centre 113 of helical form oil collection grooves 112 guiding oil baffles 11.Then, the lubricant oils of bottom centre drops under the action of centrifugal force, the direction of being got rid of back deceleration worm gear 8 along spiral groove 112, thereby, avoided lubricant to spatter the adverse effect of stream to electric conductor work

The utility model is in assembling process, as shown in Figure 2, earlier magnetic shoe 40 and magnetic shoe 41 are combined into magnetic shoe assembly 4 with magnetic shoe supporter 42 and magnetic shoe supporter 43, insert in the magnetic cylinder 2 with specialist tools, magnetic cylinder locator protrusions 21 on the magnetic cylinder 2 just in time with magnetic shoe supporter 42 and magnetic shoe supporter 43 on location hole 44 chimeric, magnetic shoe 40 and magnetic shoe 41 are fixed on the magnetic cylinder 2.

Claims

1, a kind of mainly by magnetic cylinder (2), bearing (3), magnetic shoe assembly (4), rotor (5), inverter (6), brush (7), worm gear (8), the micromachine that power output shaft (9) and deceleration worm gear shell (10) are assembled by a plurality of bolts (1), described rotor (5) is supported by bearing (3), described bearing (3) is installed in the top bearing pedestal of magnetic cylinder (2), described magnetic shoe assembly (4) is installed in the magnetic inside wall of cylinder, inverter (6) is installed on the worm screw axis (12), winding wire on the rotor (5) links to each other with inverter (6), the surface of inverter (6) contacts with brush (7), and brush (7) is connected with power line (13).Worm screw axis (12) is positioned at deceleration worm gear shell (10), and the worm gear (8) in its worm screw portion and the worm gear shell (10) is meshed, and power output shaft (9) is positioned at the central hole location of worm gear (8), and both closely cooperate and are assembled into one.It is characterized in that: described magnetic shoe assembly (4) is made up of magnetic shoe (40), magnetic shoe (41), magnetic shoe supporter (42) and magnetic shoe supporter (43), the magnetic shoe supporter has certain rigidity, a bight at itself and the chimeric place of magnetic shoe, have and axially and radially all have certain flexible three-dimensional spring leaf, make magnetic shoe with respect to supporter axially and radially all be restricted, keep the relatively stable of magnetic shoe position; Go up pressure at described worm screw axis (12) and be embedded with oil baffle (11), described oil baffle (11) is positioned between inverter (6) and worm gear (8) worm engaging place, on described deceleration worm gear shell (10), have passage to make casing and outer gas phase logical, respirator (14) is positioned in the place, passway on the deceleration worm gear shell (10).

2, micromachine according to claim 1, it is characterized in that: described respirator (14) forms by having certain flexible material, there is airway (141) and diffusing air flue (142) UNICOM mutually inside, respirator (14) top area is big, be umbrella, diffusing gas port is hidden under the umbrella, and diffusing air flue (142) is divided into the less passage group of several sectional areas.

3, micromachine according to claim 1, it is characterized in that: described oil baffle (11) is a bowl-shape object, its bottom centre place (113) closely cooperates with worm screw axis (12), and oil collection grooves (112) is arranged on the oil baffle inwall (111), is three-dimensional helical form.